Grammar nazi cat is correct again.
You are correct as well. Grammar cat forgot the period! Cat's been corrected, KEK!
This, exactly.
True, punctuation is not grammar, but can hugely impact the meaning of a sentence. Allow me to illustrate.
A professor wrote the following sentence on the board and asked his students to punctuate it:
Woman without her man is nothing.
All the girls in the class punctuated it thusly:
Woman, without her, man is nothing.
And all the boys punctuated it as so:
Woman, without her man, is nothing.
Kek, upon first glance I thought you had written:
"Solemani was Obama's Iranian back camel."